LEV886 Sex-change operations involving the surgical removal of sexual organs are clearly forbidden on the basis of the explicit Biblical prohibition [this verse]. Sterilization of women is also prohibited, as recorded in Even ha-Ezer 5:11. Rabbi Meir Amsel (Ha-Ma'or, Kislev-Tevet 5733) notes that yet another prohibition is also applicable to sex-change procedures, a consideration which may extend as well to hormone treatment for purposes of sex-change. The commandment "A woman shall not wear that which pertains to a man, nor shall a man put on a woman's garment" (Deuteronomy 22:5) is not limited to the wearing of apparel associated with the opposite sex but encompasses any action uniquely identified with the opposite sex, proscribing, for example, shaving of armpits or dyeing of hair by a male. A procedure designed to transform sexual characteristics violates the very essence of this prohibition.